13521113542 has 4 divisors (see below), whose sum is σ = 20281670316. Its totient is φ = 6760556770.

The previous prime is 13521113527. The next prime is 13521113561. The reversal of 13521113542 is 24531112531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24531112531 = 131 ⋅187260401.

It is a super-2 number, since 2×13521113542² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13521113542.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3380278384 + ... + 3380278387.

It is an arithmetic number, because the mean of its divisors is an integer number (5070417579).

Almost surely, 2^13521113542 is an apocalyptic number.

13521113542 is a deficient number, since it is larger than the sum of its proper divisors (6760556774).

13521113542 is an equidigital number, since it uses as much as digits as its factorization.

13521113542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6760556773.

The product of its digits is 3600, while the sum is 28.

The spelling of 13521113542 in words is "thirteen billion, five hundred twenty-one million, one hundred thirteen thousand, five hundred forty-two".